:root {
  --ly-deep: #08172B;
  --ly-panel: #10243D;
  --ly-line: #1E3A57;
  --ly-paper: #F3F7FC;
  --ly-mist: #8FA6BD;
  --ly-coral: #FF6B4A;
  --ly-cyan: #2DE2E6;
  --ly-sand: #C9A86A;
  --ly-lime: #B8FF3C;
  --ly-ink: #030912;

  --ly-display: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --ly-heading: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --ly-body: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "HarmonyOS Sans SC", sans-serif;
  --ly-mono: "IBM Plex Mono", "JetBrains Mono", SFMono-Regular, Consolas, "Courier New", monospace;

  --ly-wrap: 1240px;
  --ly-gutter: clamp(18px, 4vw, 48px);
  --ly-rail-h: 38px;
  --ly-bar-h: 76px;
  --ly-radius: 4px;
  --ly-ease: cubic-bezier(.22, .7, .3, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--ly-bar-h) + var(--ly-rail-h) + 12px);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--ly-deep);
  color: var(--ly-paper);
  font-family: var(--ly-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, p, dl, dd, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
input, select, textarea { font: inherit; }

:focus-visible {
  outline: 2px solid var(--ly-cyan);
  outline-offset: 3px;
}

::selection {
  background: rgba(45, 226, 230, .28);
  color: var(--ly-paper);
}

/* ============ 通用容器与节奏 ============ */
.ly-container {
  width: 100%;
  max-width: var(--ly-wrap);
  margin-inline: auto;
  padding-inline: var(--ly-gutter);
}

.ly-section {
  padding-block: clamp(52px, 7.5vw, 100px);
}

.ly-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--ly-line);
}

.ly-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ly-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ly-cyan);
}

.ly-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  flex: none;
  background: currentColor;
  opacity: .65;
}

.ly-lead {
  max-width: 62ch;
  font-size: clamp(16.5px, 1.5vw, 19px);
  line-height: 1.78;
  color: #C8D8E8;
}

.ly-prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.8;
  color: #CFDDEB;
}

.ly-prose > * + * { margin-top: 1.05em; }
.ly-prose h2 { margin-top: 1.9em; font-size: clamp(22px, 2.4vw, 30px); line-height: 1.3; color: var(--ly-paper); }
.ly-prose h3 { margin-top: 1.6em; font-size: clamp(18px, 1.9vw, 22px); line-height: 1.4; color: var(--ly-paper); }
.ly-prose ul, .ly-prose ol { padding-left: 1.35em; }
.ly-prose ul { list-style: disc; }
.ly-prose ol { list-style: decimal; }
.ly-prose li + li { margin-top: .45em; }
.ly-prose a { color: var(--ly-cyan); text-decoration: underline; text-underline-offset: 3px; }
.ly-prose strong { color: var(--ly-paper); font-weight: 700; }

.ly-num {
  font-family: var(--ly-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.ly-link {
  color: var(--ly-paper);
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size .28s var(--ly-ease), color .2s ease;
}

.ly-link:hover,
.ly-link:focus-visible {
  color: var(--ly-cyan);
  background-size: 100% 1px;
}

/* ============ 网格 ============ */
.ly-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.ly-span-3 { grid-column: span 3; }
.ly-span-4 { grid-column: span 4; }
.ly-span-5 { grid-column: span 5; }
.ly-span-6 { grid-column: span 6; }
.ly-span-7 { grid-column: span 7; }
.ly-span-8 { grid-column: span 8; }
.ly-span-12 { grid-column: span 12; }

@media (max-width: 1023px) {
  .ly-span-3, .ly-span-4 { grid-column: span 6; }
  .ly-span-5, .ly-span-7, .ly-span-8 { grid-column: span 12; }
}

@media (max-width: 639px) {
  .ly-span-3, .ly-span-4, .ly-span-5,
  .ly-span-6, .ly-span-7, .ly-span-8 { grid-column: span 12; }
}

/* ============ 面板 / 标签 / 图像容器 ============ */
.ly-panel {
  background: var(--ly-panel);
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  padding: clamp(18px, 2.4vw, 28px);
}

.ly-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--ly-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .09em;
  color: var(--ly-mist);
  white-space: nowrap;
}

.ly-tag--archive { color: var(--ly-sand); }
.ly-tag--live { color: var(--ly-coral); }
.ly-tag--score { color: var(--ly-lime); }

.ly-figure { margin: 0; }

.ly-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-radius);
  background:
    radial-gradient(120% 90% at 18% 0%, rgba(45, 226, 230, .14), rgba(8, 23, 43, 0) 62%),
    radial-gradient(95% 85% at 100% 100%, rgba(255, 107, 74, .13), rgba(8, 23, 43, 0) 64%),
    var(--ly-panel);
}

.ly-media > img,
.ly-media > svg,
.ly-media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ly-media--wide { aspect-ratio: 16 / 9; }
.ly-media--card { aspect-ratio: 4 / 3; }
.ly-media--square { aspect-ratio: 1 / 1; }
.ly-media--tall { aspect-ratio: 3 / 4; }

.ly-media__caption {
  margin-top: 10px;
  font-family: var(--ly-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--ly-mist);
}

/* ============ 按钮 ============ */
.ly-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--ly-line);
  border-radius: 3px;
  font-family: var(--ly-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.2;
  color: var(--ly-paper);
  background: transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .22s var(--ly-ease), border-color .22s ease, color .22s ease;
}

.ly-btn:hover { border-color: var(--ly-cyan); color: var(--ly-cyan); }

.ly-btn--ghost {
  border-color: rgba(255, 107, 74, .55);
  background: rgba(255, 107, 74, .08);
  color: var(--ly-paper);
}

.ly-btn--ghost:hover,
.ly-btn--ghost:focus-visible {
  background: var(--ly-coral);
  border-color: var(--ly-coral);
  color: #08131F;
}

.ly-btn--solid {
  background: var(--ly-coral);
  border-color: var(--ly-coral);
  color: #08131F;
}

.ly-btn--solid:hover,
.ly-btn--solid:focus-visible {
  background: #FF8467;
  border-color: #FF8467;
  color: #08131F;
}

/* ============ 面包屑 ============ */
.ly-crumbs { padding-block: 18px 0; }

.ly-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--ly-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ly-mist);
}

.ly-crumbs__item { display: inline-flex; align-items: center; gap: 8px; }

.ly-crumbs__link {
  color: var(--ly-mist);
  transition: color .2s ease;
}

.ly-crumbs__link:hover,
.ly-crumbs__link:focus-visible { color: var(--ly-cyan); }

.ly-crumbs__sep { color: var(--ly-line); }

.ly-crumbs__item [aria-current="page"] { color: var(--ly-paper); }

/* ============ 头部 ============ */
.ly-masthead {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ly-deep);
  border-bottom: 1px solid var(--ly-line);
  color: var(--ly-paper);
}

.ly-skip {
  position: absolute;
  left: 16px;
  top: -120px;
  z-index: 120;
  padding: 10px 18px;
  border-radius: 0 0 4px 4px;
  background: var(--ly-coral);
  color: #08131F;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: top .2s var(--ly-ease);
}

.ly-skip:focus,
.ly-skip:focus-visible { top: 0; }

.ly-rail {
  height: var(--ly-rail-h);
  overflow: hidden;
  background: var(--ly-ink);
  border-bottom: 1px solid var(--ly-line);
}

.ly-rail__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--ly-wrap);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--ly-gutter);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--ly-mist);
}

.ly-rail__note {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ly-rail__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ly-coral);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, .16);
}

.ly-rail__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.ly-rail__key {
  font-family: var(--ly-mono);
  font-size: 11.5px;
  letter-spacing: .01em;
  color: var(--ly-cyan);
}

.ly-rail__sep { color: var(--ly-line); }
.ly-rail__hint { color: var(--ly-mist); }

.ly-bar { position: relative; }

.ly-bar__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 38px);
  width: 100%;
  max-width: var(--ly-wrap);
  min-height: var(--ly-bar-h);
  margin-inline: auto;
  padding-inline: var(--ly-gutter);
}

.ly-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
  color: var(--ly-paper);
}

.ly-brand__mark {
  position: relative;
  flex: none;
  width: 30px;
  height: 30px;
  overflow: hidden;
  border: 1px solid var(--ly-line);
  border-radius: 3px;
  background:
    linear-gradient(160deg, rgba(45, 226, 230, .18), rgba(8, 23, 43, 0) 62%),
    var(--ly-panel);
}

.ly-brand__mark::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 7px;
  width: 16px;
  height: 16px;
  background: var(--ly-coral);
  clip-path: polygon(0 0, 100% 0, 100% 34%, 34% 34%, 34% 100%, 0 100%);
}

.ly-brand__mark::after {
  content: "";
  position: absolute;
  right: 5px;
  bottom: 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ly-cyan);
}

.ly-brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.ly-brand__name {
  font-family: var(--ly-heading);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--ly-paper);
}

.ly-brand__sub {
  font-family: var(--ly-mono);
  font-size: 10px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: .18em;
  color: var(--ly-mist);
}

.ly-nav {
  display: flex;
  align-self: stretch;
  margin-left: auto;
}

.ly-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.7vw, 30px);
  height: 100%;
}

.ly-nav__item { display: flex; }

.ly-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 2px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--ly-mist);
  transition: color .2s ease;
}

.ly-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--ly-coral);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s var(--ly-ease);
}

.ly-nav__link:hover,
.ly-nav__link:focus-visible { color: var(--ly-paper); }
.ly-nav__link:hover::after,
.ly-nav__link:focus-visible::after { transform: scaleX(1); }

.ly-nav__link[aria-current="page"] { color: var(--ly-paper); }
.ly-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--ly-coral);
}

.ly-bar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.ly-bar__cta { min-height: 40px; padding: 0 16px; font-size: 13.5px; }

.ly-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 12px 0 11px;
  border: 1px solid var(--ly-line);
  border-radius: 3px;
  color: var(--ly-paper);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}

.ly-toggle:hover { border-color: var(--ly-cyan); color: var(--ly-cyan); }

.ly-toggle__bars {
  position: relative;
  flex: none;
  width: 16px;
  height: 10px;
}

.ly-toggle__bars::before,
.ly-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--ly-coral);
  transition: transform .26s var(--ly-ease), opacity .2s ease;
}

.ly-toggle__bars::before { top: 0; }
.ly-toggle__bars::after { bottom: 0; }

.ly-masthead[data-open] .ly-toggle__bars::before { transform: translateY(4.25px) rotate(45deg); }
.ly-masthead[data-open] .ly-toggle__bars::after { transform: translateY(-4.25px) rotate(-45deg); }

.ly-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  z-index: 2;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ly-coral), var(--ly-cyan));
  transition: width .12s linear;
}

/* ============ 页脚 ============ */
.ly-footer {
  background: var(--ly-ink);
  border-top: 1px solid var(--ly-line);
  color: var(--ly-mist);
  font-size: 14px;
  line-height: 1.7;
}

.ly-footer__inner {
  width: 100%;
  max-width: var(--ly-wrap);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) var(--ly-gutter) 24px;
}

.ly-footer__top {
  display: grid;
  grid-template-columns: 1.5fr .9fr .9fr 1.2fr;
  gap: clamp(24px, 3vw, 48px);
}

.ly-footer__brand { min-width: 0; }

.ly-brand--footer { gap: 11px; }
.ly-brand--footer .ly-brand__name { font-size: 19px; }
.ly-brand--footer .ly-brand__sub { letter-spacing: .2em; }

.ly-footer__pitch {
  margin-top: 16px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ly-mist);
}

.ly-footer__icp {
  margin-top: 14px;
  font-family: var(--ly-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--ly-sand);
}

.ly-footer__col { min-width: 0; }

.ly-footer__title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--ly-line);
  font-family: var(--ly-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ly-sand);
}

.ly-footer__list { display: flex; flex-direction: column; gap: 9px; }

.ly-footer__link {
  display: inline-block;
  color: var(--ly-mist);
  font-size: 14px;
  transition: color .2s ease, transform .2s var(--ly-ease);
}

.ly-footer__link:hover,
.ly-footer__link:focus-visible {
  color: var(--ly-cyan);
}

.ly-footer__contact { display: flex; flex-direction: column; gap: 10px; }

.ly-footer__line {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  align-items: baseline;
}

.ly-footer__line dt {
  font-family: var(--ly-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ly-mist);
  opacity: .85;
}

.ly-footer__line dd {
  font-size: 13.5px;
  color: #CBD9E8;
  word-break: break-word;
}

.ly-footer__cta {
  margin-top: 16px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--ly-line);
  font-size: 13px;
  letter-spacing: .04em;
}

.ly-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--ly-line);
  font-size: 12.5px;
}

.ly-footer__legal {
  margin-right: auto;
  letter-spacing: .04em;
  color: var(--ly-mist);
}

.ly-footer__legal-links { display: flex; flex-wrap: wrap; gap: 18px; }
.ly-footer__legal-links .ly-footer__link { font-size: 12.5px; }

.ly-to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--ly-line);
  border-radius: 3px;
  color: var(--ly-paper);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.ly-to-top::after {
  content: "\2191";
  font-family: var(--ly-mono);
  font-size: 13px;
  line-height: 1;
}

.ly-to-top:hover,
.ly-to-top:focus-visible {
  border-color: var(--ly-cyan);
  color: var(--ly-cyan);
  background: rgba(45, 226, 230, .07);
}

/* ============ 滚动显现 ============ */
@media (prefers-reduced-motion: no-preference) {
  .ly-reveal-ready [data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .34s var(--ly-ease), transform .34s var(--ly-ease);
    will-change: opacity, transform;
  }

  .ly-reveal-ready [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }
}

/* ============ 响应式 ============ */
@media (max-width: 1023px) {
  .ly-footer__top { grid-template-columns: 1fr 1fr; }
  .ly-footer__brand { grid-column: span 2; }
}

@media (max-width: 959px) {
  :root {
    --ly-rail-h: 34px;
    --ly-bar-h: 64px;
  }

  .ly-rail__hint { display: none; }

  .ly-toggle { display: inline-flex; }

  .ly-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    align-self: auto;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: var(--ly-panel);
    border-top: 1px solid var(--ly-line);
    border-bottom: 1px solid var(--ly-line);
    box-shadow: 0 24px 48px rgba(3, 9, 18, .55);
    transition: max-height .34s var(--ly-ease), visibility .34s;
  }

  .ly-masthead[data-open] .ly-nav {
    max-height: min(72vh, 520px);
    overflow: auto;
    visibility: visible;
  }

  .ly-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: auto;
    padding: 6px var(--ly-gutter) 16px;
  }

  .ly-nav__item { border-bottom: 1px solid var(--ly-line); }
  .ly-nav__item:last-child { border-bottom: 0; }

  .ly-nav__link {
    justify-content: flex-start;
    height: auto;
    min-height: 48px;
    padding: 10px 4px;
    font-size: 16px;
  }

  .ly-nav__link::after { left: 4px; right: 4px; bottom: 0; }

  .ly-brand__sub { display: none; }
}

@media (max-width: 859px) {
  .ly-rail__note { display: none; }
  .ly-rail__inner { justify-content: flex-start; }
}

@media (max-width: 639px) {
  .ly-bar__cta { min-height: 38px; padding: 0 12px; font-size: 12.5px; letter-spacing: .02em; }
  .ly-brand__mark { width: 26px; height: 26px; }
  .ly-brand__mark::before { left: 6px; top: 6px; width: 14px; height: 14px; }
  .ly-brand__mark::after { right: 4px; bottom: 4px; }
  .ly-brand__name { font-size: 16px; }

  .ly-rail__meta { font-size: 11px; gap: 7px; }
  .ly-rail__key { font-size: 10.5px; }

  .ly-footer__top { grid-template-columns: 1fr; }
  .ly-footer__brand { grid-column: span 1; }
  .ly-footer__base { flex-direction: column; align-items: flex-start; }
  .ly-footer__legal { margin-right: 0; }
}

@media (max-width: 379px) {
  .ly-toggle__label { display: none; }
  .ly-toggle { padding: 0 11px; }
}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}